Answer:
There isnt a question in that
Step-by-step explanation:
The complete question is
John and Matt are going to fill a pool with 2 different sized hoses. John can fill the pool in 5 hours, while Matt can complete it in 10 hours.How long will it take both to fill the pool? Explain each step in solving this equation.
we know that
<span>John can fill the pool in --------------> 5 hours
</span>therefore
<span>I calculate the amount of pool that John fills in one hour
</span>if John can fill 100% of the pool in----------------> 5 hours
X--------------------------------------> 1 hour
X=1/5=0.20 pool/hour
Matt can fill the pool in --------------> 10 hours
therefore
I calculate the amount of pool that Matt fills in one hour
if Matt can fill 100% of the pool in----------------> 10 hours
X--------------------------------------> 1 hour
X=1/10=0.10 pool/hour
<span>adding both amounts
(0.20+0.10)=0.30 -----------> 30% pool/hour
then
</span>if both can fills 30% of the pool in----------------> 1 hour
100%-------------------------------> X
X=100/30=3.33 hours----------> 3 hours + 19 minutes+ 48 sec
the answer is 3.33 hours (3 hours + 19 minutes+ 48 sec)
<span>The equation to determine the amount of pool filling (y) according to time (t) in hours is given by
</span><span>y=0.30*t
</span>
Answer:
92
Step-by-step explanation:
You multiply ‘em
9 times 18 = 162
6 times 24 = 144
Answer:
d^2 - 14d + 49 = (d-7)(d-7).
Step-by-step explanation:
Given the expression is d^2 - 14d + 49.
d^2 - 14d + 49 = d^2 - 2*7*d + 7^2
We know the formula of square of difference as given below:-
x^2 - 2*x*y + y^2 = (x-y)^2
Using the above formula in the problem, here x = d and y = 7.
d^2 - 2*7*d + 7^2 = (d-7)^2
d^2 - 2*7*d + 7^2 = (d-7)(d-7)
So, d^2 - 14d + 49 = (d-7)(d-7).
